NIR TO SWIR FLUORESCENT COMPOUNDS FOR IMAGING AND DETECTION
申请人:PERKINELMER HEALTH SCIENCES, INC.
公开号:US20190100654A1
公开(公告)日:2019-04-04
This disclosure provides a family of compounds that absorb and fluoresce in the short wave infrared region (SWIR, optionally 1000 nm to 1300 nm), including hydrophilic compounds that exhibit absorption and emission spectral profiles in aqueous solutions substantially similar to those observed in organic solvents such as methanol or DMSO. The compounds can be chemically linked to biomolecules including proteins, nucleic acids, and therapeutic small molecules. The compounds are useful for imaging in a variety of medical, biological and diagnostic applications, including SWIR in vivo imaging of regions of interest within a mammal.
Enolization of Aldehydes and Ketones: Structural Effects on Concerted Acid−Base Catalysis
作者:Anthony F. Hegarty、Joseph P. Dowling、Stephen J. Eustace、Michelle McGarraghy
DOI:10.1021/ja9729544
日期:1998.3.1
the product of the consecutive rate constants (kA·kB) and the concerted (third order) rate constants (kAB). This implies that the concerted pathway is important only when both the generalacid and the generalbase terms are significant; this will be useful in designing other systems which might show such concertedcatalysis. In the case of aldehydes, a slope of 0.97 was found for this plot, which compares
Cp* Iridium Precatalysts for Selective C–H Oxidation with Sodium Periodate As the Terminal Oxidant
作者:Meng Zhou、Ulrich Hintermair、Brian G. Hashiguchi、Alexander R. Parent、Sara M. Hashmi、Menachem Elimelech、Roy A. Periana、Gary W. Brudvig、Robert H. Crabtree
DOI:10.1021/om301252w
日期:2013.2.25
Sodium periodate (NaIO4) is shown to be a milder and more efficient terminal oxidant for C–H oxidation with Cp*Ir (Cp* = C5Me5) precatalysts than ceric(IV) ammonium nitrate. Synthetically useful yields, regioselectivities, and functional group tolerance were found for methylene oxidation of substrates bearing a phenyl, ketone, ester, or sulfonate group. Oxidation of the natural products (−)-ambroxide
与硝酸铈(IV)铵相比,高碘酸钠(NaIO 4)是用Cp * Ir(Cp * = C 5 Me 5)进行C–H氧化的缓和和有效的终端氧化剂。对于带有苯基,酮,酯或磺酸酯基团的底物的亚甲基氧化,发现了在合成上有用的产率,区域选择性和官能团耐受性。天然产物(-)-氨氧化物和香紫苏内酯的氧化选择性进行,顺式-十氢萘羟基化中构型得以保留。在60°C时,即使是一级C–H键也可以被激活:而甲烷被过氧化为CO 2以总NaIO 4计,乙烷以39%的收率没有产生部分氧化的产物,以25%的收率将乙烷转化为乙酸。在18- OH 2和NaIO 4的顺式-萘烷羟基化中证明了18 O标记。在23°C的环己烷氧化中发现3.0±0.1的动力学同位素效应,这表明C–H键的裂解是限速步骤。C–H与水氧化的竞争实验表明,4-乙基苯磺酸钠的C–H氧化受到4个数量级的青睐。操作中 时间分辨的动态光散射和动力学分析排除了金属氧化物纳
Co(<scp>ii</scp>), a catalyst for selective conversion of phenyl rings to carboxylic acid groups
作者:Shashi Bhushan Sinha、Jesús Campos、Gary W. Brudvig、Robert H. Crabtree
DOI:10.1039/c4ra10510a
日期:——
We describe the use of Co(ii) in the presence of Oxone to effectively catalyze the conversion of –C6H5 to –COOH groups with a broad substrate scope, selectivity and under mild conditions.
Homogeneous aqueous oxidation of organic molecules by Oxone® and catalysis by a water-soluble manganese porphyrin complex
作者:Tu-Cai Zheng、David E. Richardson
DOI:10.1016/0040-4039(94)02420-g
日期:1995.2
Peroxymonosulfate (KHSO5) oxidizes a wide variety of water-soluble organic molecules in aqueous solutions, and the reactions are generally more rapid in phosphate buffer (pH 6–7) than in pure water. A water-solubleporphyrin complex, meso-tetrakis(4-N-methylpyridyl)porphyrinatomanganese(III) chloride, catalyzes epoxidation and hydroxylation under neutral pH conditions.